MAX485 - RS-485 RS-422 Transceiver IC

MAX485 - RS-485/RS-422 Transceiver IC

The MAX485 is low-power transceivers for RS-485 and RS- 422 communication. The IC contains one driver and one receiver. The driver slew rates of the MAX485 is not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. All parts operate from a single 5V supply. Drivers are short-circuited current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The MAX485 is designed for half-duplex applications.

Specification:

IC, CMOS BUS TRANSCEIVER, DIP8, 485

Device Type: Transceiver

No. of Drivers: 1

Supply Voltage Range: 4.75V to 5.25V

Driver Case Style: DIP

No. of Pins: 8

Operating Temperature Range: 0°C to +70°C

Base Number: 485

Data Rate: 2.5Mbps

Device Marking: MAX485CPA+

Digital IC Case Style: DIP

IC Generic Number: 485

IC Temperature Range: Commercial

Interface: RS-422 / RS-485

Interface Type: RS422, RS485

Line / Bus Driver / Receiver / Transceiver Type: CMOS Differential

Logic Function Number: 485

No. of Receivers: 1

Operating Temperature Max: 70°C

Operating Temperature Min: 0°C

Package / Case: DIP

Supply Current: 500µA

Supply Voltage Max: 5.25V

Supply Voltage Min: 4.75V

Termination Type: Through Hole

Transceiver Type: Differential

Features:

Low Quiescent Current: 300µA

-7V to +12V Common-Mode Input Voltage Range

Three-State Outputs

30ns Propagation Delays, 5ns Skew

Operate from a Single 5V Supply

Allows up to 32 Transceivers on the Bus

Data rate: 2.5 Mbps

Current-Limiting and Thermal Shutdown for Driver Overload Protection

The transmitter outputs and receiver inputs are protected to ±15kV Air ESD